baughman



(No Model.) 2 SheetsSheet 1,

J. W. BAUGHMAN. AUTOMATIC ELECTRIC BURGLAR ALARM.

No. 594,192. Patented Nov. 23', 1897.

WITNESSES. INVENTOH ATTOHNEXQI.

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(No Model.) 2 Sheets-Sheet 2.

J. W. BAUGHMAN. AUTOMATIC ELECTRIC BURG'LAR ALARM.

No. 594,192 Patented Nov. 23, 1897.

' Q, I 3] i 4 7 m 61 31 WITNESSES {31 31 [NVENTOH umm. vusumnwn n r UNITED STATES PATENT OFFICE.

JOHN WESLEY BAUGHMAN, OF DALTON, OHIO, ASSIGNOR OF ONE-HALF TO MILLARD F. MCDOWELL, OF SAME PLACE.

AUTOMATIC ELECTRIC BURGLAR-ALARM.

SPECIFICATION forming part of Letters Patent N 0. 594,192, dated November 23, 1897. Application filed March 25,1897. fierial No. 629,200. (No ma.)

T at whom it may concern.- ing connection with the contact-point 20, and

Be it known that I, JOHN WESLEY BAUGH- from this point a conductor 21 extends to the MAN, a citizen of theUnited States, residing at armature-post 7, thence through the magnet Dalton, in the county of Wayne and State of and a conductor 22 to the terminal post 3. 55

Ohio, have invented certain new and useful From the terminal post 4 a conductor 23 0011-.

Improvementsin Automatic Electric Burglarnects with the lever 15. A conductor 24 ex- Alarms; and I do hereby declare the follow-- tends from the terminal post 2 to the contacting to be a full, clear, and exact description post 13. g of the invention, such as will enable others represents an ordinary open-circuit local 1o skilled in the art to which it appertains to battery, its conductors extending to the posts make and use the same. 2 and 3. The burglar and fire alarm circuit My invention has relation to improvements begins at the post 3 and extends over the conin automatic electric fire and burglar alarm ductor 26 to the gravity or other closed-circuit systems; and the object is to provide a simple battery 27, thence through the burglar-alarm I 5 and effective system of this kind; and to this spring-contact 28 and the fire-alarm springend the novelty consists in the construction, contact point 29, and thence over the concombination, and arrangement of the same, as ductor 30 back to the screw-post 4. will be hereinafter more fully described, and As shown in Fig. 1, the local-battery cirparticularly pointed out in the claim. cuit is open at the post 13, while the alarm- 20 In the accompanying drawings the same circuit, starting at the contact-point 20, (the reference-characters indicate the same parts circuit being closed through the magnet which of the invention. attracts the armature and opens the local cir- Figure 1 is a diagrammatic view of my imcuit at the'post 13,) thence goes over the con proved electric fire and burglar alarm as conductor 22 to the post 3, the conductor 26, bat- 25 nected with a closed circuit. Fig. 2 is a detery 27, burglar-alarm connection 28, firetail view of the switch connection shown in alarm connection 29, and conductor 30 to the I Fig. 1. Fig. 3 is a diagrammatic View of the post 4, and from said post over the conductor I alarm as connected with an open circuit. Fig. 23 to the lever 15 and through its arm 19 to 4 is a perspective detail view of the switch the starting-point at the contact 20. If now o connection shown in Fig. 3, and Fig. 5 is a the alarm-circuit be interrupted or opened, detail View of the mechanical circuit for the the magnet releases the armature, which falls fire-alarm system. Fig. 6 is a sectional View back, carrying with it the hammer-arm 9, of cord-coupling. which strikes the pin 18 and moves the switch- 1 represents a vibrating bell provided with arm 17, which shifts the switch-lever 15 out 5 three terminal connection-posts 2, 3, and 4. of contact with the point 20, as shown in Fig.

5 represents the electromagnet; 6, its vi- 2. In the meantime the armature on being brating armature, mounted on the post 7 and released carries its spring Sbackward with it provided with the contact-spring 8, and the and into electrical contact with the post 13, hammer-arm 9, terminating in the hammer which closes the local-battery circuit and 0 4o 10, arranged to sound an alarm on the gong causes a continuous alarm to be sounded un- 12 when the magnet is energized. til the alarm-circuit is again closed to ener- 13 represents the usual contact, provided gize the magnet and withdraw the armaturewith an adjustable contact-screw 14, the inspring from the contact-post 13. ner end of which projects into the path of the A series of the burglar-alarm connections 5 5 free end of the contact-spring 8 on the arma- 28may be located in the alarm-circuit, one at ture. each door, window, or other points to be pro- 15 represents a switch-lever fulcrumed on tected, and of course if said circuit is intera connection-post 16, and its arm 17 is prorupted at any point the alarm is automaticvided with aninsulated pin 18, which proally and continuously sounded until the cir- [00 50 j ects into the path of the hammer-arm 9,whi1e cuit is again closed through the switch-lever. its opposite arm 19 is arranged to form a slid- In the burglar-alarm connection the tension of the spring-arms is exerted to hold them in contact with each other and close the circuit between them, while in the fire-alarm connection 29 the reverse is the case. The tension of the spring-arms is exerted to hold them apart, they being held in contact with each other by the cord 31 being connected at one end to one spring-arm and thence through a series of screw-eyes 32, located at intervals throughout the premises to be protected, and back again to the opposite spring-arm, where it is secured with sufficient tension to hold the two springs in contact. Of course it is obvious that a rupture of the cord at any point will cause the springs to separate and open the alarm-circuit, with the result as heretofore described.

Referring to Fig. 3, which illustrates the manner of setting up my improved fire and burglar alarm system on an open circuit, it will be seen that the alarm-circuit battery is dispensed with and slight changes in the course of the conductors, as shown,the switchlever being open, so that when the alarm-circuit is closed at either the fire orburglar alarm connections the switch is shifted by the first movement of the armature, which closes the local circuit at the switch and continuously operates the alarm.

In Fig. 6 I have shown a section of the cord comprising mechanical fire-alarm circuit.

31 31 represents the cord, the ends of which are brought together and temporarily joined by a wax pellet a, which holds said cord at the normal temperature, but will soften and allow the ends of the cord to pull apart at an abnormal temperature, say of about 110 or above, and separate the fire-alarm connections. This mechanical cord-circuit is preferably extended around a room, store, or other apartment, contiguous to the ceiling, and an indefinite number of joints in the cord are covered by the wax pellets a, arranged in the circuit, so that when a fire occurs in an apartment the heated air will rise to the ceiling and fuse the pellets a and operate the alarm, as hereinbefore indicated.

Although I have specifically described the construction and relative arrangement of the several elements of my invention, I do not desire to be confined to the same, as such changes or modifications may be made as clearly fall within the scope of my invention without departing from the spirit thereof.

Having thus fully described my invention, what I claim as new and useful, and desire to secure by Letters Patent of the United States, is-

An electric-alarm system comprising the vibrating bell, having the terminal connecting-posts 2 3, and 4, the lever provided with a pin 18 projecting into the path of the hammer-arm, a conductor 23 connecting said lever with the post 4, a contact located in the path of one end of said lever and in electrical connection with the post 8, through the conductor 21, post 7, magnet 5 and conductor 22, the contact-post 13, connected to the terminal post 2 by the conductor 24, and the local battery 25, having its poles connected to the terminal posts 2 and 3, in combination with the alarm-circuit, its battery and spring connections 28 and 29, substantially as shown and described.

In testimony whereof I alfix my signature in presence of two witnesses.

JOHN WESLEY BAUGHMAN.

Witnesses:

JNo. 11. Storm, E. F. Soorr. 

